//
//  The MIT License (MIT)
//
//  Copyright (c) 2016 Srdan Rasic (@srdanrasic)
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

import ReactiveKit
import Foundation

extension Property {

    /// Transform the `getter` and `setter` by applying a `transform` on them.
    public func bidirectionalMap<U>(to getTransform: @escaping (Element) -> U,
                                    from setTransform: @escaping (U) -> Element) -> DynamicSubject<U> {
        return DynamicSubject<U>(
            target: self,
            signal: eraseType(),
            context: .immediate,
            get: { (property) -> U in
                return getTransform(property.value)
            },
            set: { (propery, value) in
                propery.value = setTransform(value)
            }
        )
    }
}
